I just finished rebuilding my d16z6. It has about 50 miles on it. It has a brand new ACL race oil pump. Main bearing clearances are .0018-.002 and rods are about .0024-.0025. I'm running 10w-40 and my oil pressure is a little lower than I would like it. Its about 90 psi on cold idle, but after it gets hot, it hovers around 9-15 psi. 3k rpm is about 65-75. It's not turbo yet, but I plan to turbo it in the near future. I'm worried that I'm gonna have issues down the when the oil gets extra hot from the turbo. My machinist said to run either 10w-40 or 20w-50, but how much of a difference will the thicker oil make? Any ideas for what the problem could be? Should I be worried?